Discussion
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- Question
A circuit that has an output equal to the algebraic sum of the inputs is called a(n) ______ .
Options- A. integrator amplifier
- B. summing amplifier
- C. differential amplifier
- D. voltage multiplier
- Correct Answer
- summing amplifier
- 1. If the input to a comparator is a sine wave, the output is a(n) _________.
Options- A. ramp voltage
- B. sine wave
- C. sawtooth wave
- D. rectangular wave Discuss
- 2. A ______ is not a multivibrator.
Options- A. one-shot
- B. flip-flop
- C. VCO
- D. bistable Discuss
- 3. An oscillator whose frequency can be controlled by an input "control voltage" is called a(n) ______ .
Options- A. PLL
- B. Schmitt trigger
- C. VCO
- D. S-R latch Discuss
- 4. The 555 timer can be connected to operate a(n) ___________.
Options- A. astable multivibrator
- B. bistable multivibrator
- C. monostable multivibrator
- D. astable multivibrator and a monostable multivibrator Discuss
- 5. The resistors Rf and Ri in an op-amp circuit control ______ .
Options- A. positive feedback and current gain
- B. negative feedback and power gain
- C. negative feedback and voltage gain
- D. open and closed loop gain Discuss
- 6.
The feedback resistor has a value of ______ in the given circuit
Options- A. 2 kΩ
- B. 10.5 kΩ
- C. 21 kΩ
- D. 40 kΩ Discuss
- 7. A PLL can be used as a(n) ___________.
Options- A. series voltage regulator
- B. frequency multiplier
- C. relaxation oscillator
- D. Schmitt trigger Discuss
- 8. Switching voltage regulators have ______ than linear regulators.
Options- A. longer life
- B. simpler circuitry
- C. greater efficiency
- D. lower cost Discuss
- 9. The efficiency rating of a power supply is determined by internal power loss.
Options- A. True
- B. False Discuss
- 10. Heat produced by a resistor is generally a desirable effect.
Options- A. True
- B. False Discuss
Operational Amplifiers problems
Search Results
Correct Answer: rectangular wave
Correct Answer: one-shot
Correct Answer: VCO
Correct Answer: astable multivibrator and a monostable multivibrator
Correct Answer: negative feedback and voltage gain
Correct Answer: 40 kΩ
Correct Answer: frequency multiplier
Correct Answer: greater efficiency
Correct Answer: True
Correct Answer: False
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